25149754321 has 8 divisors (see below), whose sum is σ = 26640520704. Its totient is φ = 23660251200.

The previous prime is 25149754171. The next prime is 25149754337. The reversal of 25149754321 is 12345794152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25149754321 - 2¹⁹ = 25149230033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25149754381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274665 + ... + 354598.

It is an arithmetic number, because the mean of its divisors is an integer number (3330065088).

Almost surely, 2^25149754321 is an apocalyptic number.

It is an amenable number.

25149754321 is a deficient number, since it is larger than the sum of its proper divisors (1490766383).

25149754321 is a wasteful number, since it uses less digits than its factorization.

25149754321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631631.

The product of its digits is 302400, while the sum is 43.

The spelling of 25149754321 in words is "twenty-five billion, one hundred forty-nine million, seven hundred fifty-four thousand, three hundred twenty-one".